He had been too proud to ask for help.

他自尊心太强，从不求助于人。

youdao

This is no time to be too proud to ask for help - remember, we're in crisis mode here.

太自负而不想寻求帮助，我们没有时间—记住，我们仍处于不利形势。

youdao

He was too proud to ask his family for help and support.

他自尊心太高，不肯请求家里人的帮助和支持。

《柯林斯英汉双解大词典》

And don't be too proud to ask for help from relief agencies.

CNN: High tides and higher interest rates: Wading through financial storms